The Facilities Greenhouse Micro-weather Information Monitoring App allows growers to easily view the internal environment information collected from the light quantity, temperature and humidity, and CO2 sensors installed inside the greenhouse where facility crops are grown (1) so that growers can refer to the management of the cultivation environment. Function to provide information such as daily average temperature, daily maximum-minimum temperature, daily cumulative solar radiation, and condensation temperature through information processing, (2) In order for growers to quickly and accurately grasp environmental changes inside the greenhouse, Provides a function to graph integrated environmental information or to select and visualize integrated environmental information for a specific period as a graph, and to provide information specialized for each major factor that affects crop growth, such as temperature or light quantity. (3) Provides a function to give a warning message when the measured values of major factors such as temperature, humidity, light quantity, and CO2 concentration are out of the proper range for crop growth. This app targets small-scale facility cultivation farms or first-generation smart farms that do not use a complex environmental control system and associated sensors, and if only a micro-weather sensor is installed, information that is helpful in managing the cultivation environment suitable for growing crops is obtained and judged. It aims to enable early response through situation notification.